Here are schematics of that how a UFO work + video proof at the end from STS-75
(watch exactly between 4:30 and 5:15)
(http://img99.imageshack.us/img99/2272/ag4compod0.jpg)
(http://img389.imageshack.us/img389/5198/figs1bk6.gif)
(http://img389.imageshack.us/img389/2644/figs3jo0.gif)
(http://img389.imageshack.us/img389/5606/figs4to4awa1.gif)
(http://img389.imageshack.us/img389/9931/figs5eq5.gif)
(http://img389.imageshack.us/img389/7957/figs6to7zg8.gif)
(http://img389.imageshack.us/img389/2442/figs8to8.gif)
(http://img389.imageshack.us/img389/593/figs10ib4.gif)
(http://img389.imageshack.us/img389/8765/figs11yf9.gif)
(http://img389.imageshack.us/img389/9220/figs12te4.gif)
(http://img389.imageshack.us/img389/2558/figs13to15vz6.gif)
(http://img389.imageshack.us/img389/3006/figs16cs3.gif)
(http://img389.imageshack.us/img389/7192/figs17wl8.gif)
(http://img389.imageshack.us/img389/7253/figs18to20ci9.gif)
(http://img389.imageshack.us/img389/2953/figs21to22nk0.gif)
(http://img389.imageshack.us/img389/442/figs23ch8.gif)
(http://img389.imageshack.us/img389/444/figs24vc0.gif)
(http://img389.imageshack.us/img389/8748/figs25ax6.gif)
(http://img389.imageshack.us/img389/4950/figs26bu5.gif)
(http://img389.imageshack.us/img389/2751/iondirvh3.gif)
(http://img389.imageshack.us/img389/8247/chromefilmak8.gif)
(http://img389.imageshack.us/img389/8738/p2rk7.gif)
(http://img389.imageshack.us/img389/4310/beamjy9.jpg)
http://www.youtube.com/watch?v=EZb1xhC8fs0